Abstract: The present disclosure provides a drug delivery device. The drug delivery device is taken orally by a patient, and then activates within the gastrointestinal (GI) tract of the patient. Upon activation, resilient arms within the drug delivery device expand and engage the GI tract walls. A driver then drives a plunger within the drug delivery device, pushing a drug through a channel in the resilient arms and through the GI tract walls of the patient. After a period of time, at least a portion of the drug delivery device dissolves and the drug delivery device passes through the GI tract.

Abstract: A saliva test system for performing an ELISA or ELONA test comprises: a narrowing, such as a constriction, of an inlet channel, the narrowing for limiting a volume of collected saliva; and a vent hole to assist flow of the collected saliva through the saliva receiver toward an incubation chamber, the vent hole coupled downstream of the narrow-ing and/or the incubation chamber and openable to enable flow of the collected saliva through the narrowing toward the incubation chamber.